Description

This PR significantly enhances the db:seed command with two major improvements:

1. Multiple Seeder Support: Ability to run multiple seeders in a single command
2. Validation Layer: Comprehensive pre-execution checks for seeder integrity

Changes

1. Multiple Seeder Implementation

Core Changes:

• Modified argument/option handling from singular class to plural classes
• Updated method signatures and help texts to reflect new capability
• Implemented array processing for multiple classes:

  $classes = $this->input->getArgument('classes') ?? $this->input->getOption('classes');
  foreach (explode(',', $classes) as $class) {
      $class = trim($class);
      // Namespace handling and validation
  }